HZT037302100 Flap Valve | 25MBA Series Vacuum Sewage Pump Key Component. EPDM One-Way Seal. Compatible with JETS (Marine/Yacht/Land Vacuum Toilet) Vacuum Systems.

HZT037302100 Flap Valve | Key Component for the 25MBA Series Vacuum Sewage Pumps. EPDM One-Way Seal. Compatible with Mainstream Vacuum Systems (Marine, Yacht, and Land Vacuum Toilet).

1. Product Overview
The HZT037302100 flap valve is a key one-way opening and closing component in the 25MBA series vacuum sewage pumps. Installed between the suction chamber (HZT023280040) and the flap valve base (HZT023280061), it controls the one-way flow of black or gray water within the vacuum system. The valve automatically opens and closes based on pressure differentials, preventing wastewater backflow and gas re-injection, ensuring long-term stable system operation.

It is widely used in marine, yacht, passenger ship, and land-based vacuum toilets, serving as a key component for achieving high vacuum sealing and water-saving discharge.

2. Materials and Craftsmanship
This component is compression-molded from high-performance EPDM (ethylene propylene diene monomer) elastomer, offering excellent resistance to seawater, blackwater, ozone, and aging, making it suitable for high-humidity, saline, and acidic/alkaline environments. After molding, it undergoes trimming and surface inspection to ensure uniform thickness and a smooth sealing surface, ensuring flexible opening and closing and reliable sealing. The EPDM material has a shore hardness of 60±5A, balancing flexible conformability with mechanical fatigue resistance, and can withstand frequent opening and closing conditions.

This component is precisely matched to the HZT023280061 valve seat, using a CNC-machined mold to ensure precise sealing contact. Together with the pump body (HZT023280010), suction chamber (HZT023280040), and pressure chamber (HZT023219100), it forms a complete sealed fluid channel.

3. Structure and Technical Features
The HZT037302100 flap valve features a curved sealing edge structure, enabling rapid opening at extremely low pressure differentials and rapid closing during vacuum recovery. Its unique geometry, optimized through fluid dynamics, reduces energy consumption and noise during opening and closing, improving system flow efficiency.

Technical Features:
a) One-way opening and closing structure, automatically controlled in response to vacuum pressure differential.
b) EPDM elastomer material is corrosion-resistant and aging-resistant, suitable for black water media.
c) High-precision fit with the HZT023280061 valve seat and HZT023280040 suction chamber.
d) Supports high-frequency opening and closing and long-term continuous operation, with a long maintenance interval.
e) Maintains sealing synchronization even when the pump body is dynamically balanced to G2.5.

4. Applications
This valve disc is not only suitable for 25MBA marine vacuum sewage systems, but can also be widely used in the following:
a) Vacuum sewage discharge systems for ships, yachts, passenger ships, and merchant/cruise/passenger vessels.
b) Vacuum wastewater transfer for offshore platforms, drillships, and FPSOs.
c) Recreational vehicles (RVs), portable toilets, and land-based vacuum toilet systems.
d) Blackwater/greywater vacuum collection and treatment systems.
e) Water-saving public health facilities, eco-friendly campsites, and urban underground sewage vacuum pipe networks.
This product features high water-saving efficiency, stable flow, and easy maintenance. It is compatible with major marine vacuum systems, including the interfaces and mounting structures used by common international brands.

5. Related Materials and Compatibility
The HZT037302100 flap valve and the following 25MBA series components form a complete fluid control system:

* HZT023280061 Flap Valve Base
* HZT023280040 Suction Chamber
* HZT023219000 Rotor Housing
* HZT023219100 Pressure Chamber
* HZT038218900 Shaft Seal
These components work together to form the core of a high-efficiency, low-leakage, and energy-saving vacuum sewage pumping system.

6. Professional Summary
The HZT037302100 flap valve is a key sealing component in the 25MBA vacuum sewage pump. Manufactured from EPDM elastomer, this component offers excellent corrosion resistance, fatigue resistance, and sealing properties, effectively improving vacuum system reliability and water conservation. This component is widely applicable to vacuum sewage systems on ships, yachts, offshore platforms, and land-based systems. Compatible with major international vacuum system structural standards, it is an ideal replacement and accessory option.

7. Technical Support and Supply

HZT provides complete equipment, system design, and accessory services:

* Comprehensive solutions for marine vacuum pumps and sewage vacuum pumping stations
* OEM system and shipyard support
* Rapid parts supply and repair service

📧 Technical Support Email: SJDT1199@gmail.com
🌐 Official Website: www.vacuumtoiletparts.com

1. HZT029151001 – Flap Valve Seat
2. HZT037302200 – Flap Valve Disc
3. HZT029151003 – Pressure Plate
4. HZT029150310 – Suction Chamber Cover
5. HZT037219210 – O-Ring
6. HZT029150320 – Suction Chamber
7. HZT020202900 – Hexagon Socket Seal
8. HZT029151900 – Lock nut
9. HZT029150400 – Rotating blade
10. HZT029150500 – Stationary blade
11. HZT029152401 – Half-threaded hexagonal bolt with spring washer (M10x170)
12. HZT029150601 – End flange
13. HZT029150701 – Rotor (impeller)
14. HZT029150800 – Rotor housing
15. HZT029151800 – Spacer
16. HZT038201500 – Shaft seal
17. HZT034507420 – Hose clamp
18. HZT034507500 – Hose
19. HZT029150391 – Shaft Seal Flange
20. HZT029150901 – Pressure Chamber (Water Discharge Chamber)
21. HZT029150310-02 – Suction Cover (Metal Plate)
22. HZT029150450 – Cutter Assembly
23. HZT/- – Motor – 2.2kW – Marine Motor
24. HZT029015001 – 15MBD Vacuum Pump
25. HZT023280061 – Flap Valve Seat
26. HZT037302100 – Flap Valve Disc
27. HZT023280091 – Pressure Plate
28. HZT023280050 – Suction Chamber Cover
29. HZT037219260 – O-ring
30. HZT023280070 – Flange Fastener
31. HZT023280080 – Flange
32. HZT023280040 – Suction Chamber
33. HZT020202900 – Plug
34. HZT020203100 – Rotating Blade
35. HZT020203100 – Stationary Blade
36. HZT021201000 – Blade Holder
37. HZT036202010 – Half-thread Hexagon Bolt (with Spring Washer) M12x220
38. HZT023200210 – Suction Chamber End Plate
39. HZT023219000 – Rotor Housing
40. HZT021265401 – Rotor (Impeller)
41. HZT021217000 – RG 3/8” Plug
42. HZT023219000 – Pressure Chamber (Discharge Chamber)
43. HZT023260400 – Isolation Sleeve
44. HZT038218900 – Shaft Seal
45. HZT023280030 – Shaft Seal Flange
46. HZT023280050-02 – Suction Chamber Cover (Metal Sheet)
47. HZT/- – Motor – 3.0 kW – Marine Motor
48. HZT023280010 – 25 MBA Vacuum Pump

6541458, 5900200, 6558400147, 5957600, 5980801, 6541673, 5979000, 5435181, 5451480, 6543469, 6543521, 5980914, 5981000, 6545873, 6545872, 6541672, 5979500, 5979600, 6542601, 6542586, 6541675, 5775500, 5973401, 6545363, 6543035, 5959902, 6542998, 6545393, 6541552, 5437623, 6540972, 6540973, 6543036, 5821700, 5433594, 6542305, 6545041, 5821000, 6542997, 6547089, 6547327, 6545537, 5490590, 5490587, 5450072, 5490580, 6541525, 6546852, 6545903, 6541709, 6541708, 6546255, 6542549, 6542827, 6543101, 6545725, 5437598, 5430612, 6541200, 5442101, 5824900, 6541003, 5980802, 6542958, 5435169, 6545052, 65433072, 5779210, 5780000, 5779400, 5435269, 6543003, 70701001, 5774002, 5774000, 5900204, 5435015, 5774901, 6542981, 6545051, 6542402, 6543002, 5481004, 6543072, 5445001, 6545828, 6540969, 5437666, 5913502, 5430595, 5979312, 6545901, 5490548, 6542451, 6542434, 6543229, 5470214, 6542983, 6542982, 5433215, 5432548